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arXiv · 1807.00620

Strong Dynamics and Natural Inflation

Gary Shiu·Wieland Staessens
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Abstract

We continue our investigation of the 4d effective field theory for closed string axions in Type II compactifications with D-branes. The inclusion of Stückelberg couplings for the axions requires the presence of chiral fermions at D-brane intersections, whose interactions at strong non-Abelian gauge coupling induce mass terms for the axions and scalar chiral condensate excitations, dubbed infladrons. The set-up allows for a realization of natural-like inflation with a closed string axion as inflaton and a flattened scalar potential due to the back-reaction of the more massive infladrons. We further point out that this large field inflationary model is not compromised by axionic wormhole corrections.

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Gary Shiu, Wieland Staessens. 2018-07-02. Strong Dynamics and Natural Inflation. https://doi.org/10.1103/physrevd.98.083504

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